Apparatus for the Direct Measurement of Adsorption on Solid Surfaces from Liquids

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Abstract
An apparatus is described for the measurement in situ of adsorption of solutes on solids and kinetics of film formation on solid surfaces. The technique is applicable only to very dilute solutions in which the solute can be tagged with a γ‐ or hard β‐emitting isotope. The adsorbed radioactivity of the surface is determined through a continuously replenished thin layer of solution. The kinetics and equilibrium conditions of adsorption, desorption and exchange reactions can be determined conveniently; simultaneously, the electrochemical behavior of the surface can be studied. Some measurements are reported.

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